diff --git a/types/chai-uuid/chai-uuid-tests.ts b/types/chai-uuid/chai-uuid-tests.ts
new file mode 100644
index 0000000000..0620464988
--- /dev/null
+++ b/types/chai-uuid/chai-uuid-tests.ts
@@ -0,0 +1,15 @@
+import { assert, expect, use, should } from 'chai';
+import chaiUuid = require('chai-uuid');
+
+use(chaiUuid);
+should();
+
+// bdd style
+expect('67cb8aa1-61bb-4b9b-8ca9-9dc0b278d5f7').to.be.uuid('v4');
+expect('67cb8aa1-61bb-4b9b-8ca9-9dc0b278d5f7').to.be.guid;
+expect('invalid').to.not.be.uuid('v4');
+expect('invalid').to.not.be.guid();
+
+// tdd style
+assert.uuid('67cb8aa1-61bb-4b9b-8ca9-9dc0b278d5f7', 'v4');
+assert.guid('67cb8aa1-61bb-4b9b-8ca9-9dc0b278d5f7');
diff --git a/types/chai-uuid/index.d.ts b/types/chai-uuid/index.d.ts
new file mode 100644
index 0000000000..23a0b6db92
--- /dev/null
+++ b/types/chai-uuid/index.d.ts
@@ -0,0 +1,27 @@
+// Type definitions for chai-uuid 1.0
+// Project: https://github.com/rfrench/chai-uuid
+// Definitions by: Harm van der Werf <https://github.com/harm-less>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.8
+
+/// <reference types="node" />
+/// <reference types="chai" />
+
+declare global {
+	namespace Chai {
+		type UuidVersion = 'v1' | 'v2' | 'v3' | 'v4' | 'v5' | '';
+
+		interface Assertion extends LanguageChains, NumericComparison, TypeComparison {
+			uuid(uuid?: UuidVersion): void;
+			guid(guid?: any): void;
+		}
+
+		interface Assert {
+			uuid(uuid: string, version?: UuidVersion): void;
+			guid(guid: string, version?: any): void;
+		}
+	}
+}
+
+declare function chaiUuid(chai: any, utils: any): void;
+export = chaiUuid;
diff --git a/types/chai-uuid/tsconfig.json b/types/chai-uuid/tsconfig.json
new file mode 100644
index 0000000000..ca2ca40071
--- /dev/null
+++ b/types/chai-uuid/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "chai-uuid-tests.ts"
+    ]
+}
diff --git a/types/chai-uuid/tslint.json b/types/chai-uuid/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/chai-uuid/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }